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robausdemore

Spark arrestor comparison

5 posts in this topic

I have a 98 YZ400f and need a spark arrestor. My budget Is minimal it seems my choices are an end cap with a insert to silence it, or a FMF Q series pipe. Can anybody let me know if the silencer insert works well, and how much power does it rob and is there re-jetting required? And does the "Q" pipe work well and really give more power than stock, at the same time make less noise? And is there re-jetting?

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I have a 98 YZ400f and need a spark arrestor. My budget Is minimal it seems my choices are an end cap with a insert to silence it, or a FMF Q series pipe. Can anybody let me know if the silencer insert works well, and how much power does it rob and is there re-jetting required? And does the "Q" pipe work well and really give more power than stock, at the same time make less noise? And is there re-jetting?

I have a pmb endcape on my 426 and my brother has a q on his bike. You have to rejet for the q but there is a noticeable power gain. It is still louder than my pmb with quiet insert, but it is still legal. The pmb requires no jet changes and personally I felt no power loss. Most of that feeling comes from less noise, but without a dyno it is very minute. It just depends on what you want and how much $ you have to spend. They are both great products.

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I have a pmb endcape on my 426 and my brother has a q on his bike. You have to rejet for the q but there is a noticeable power gain. It is still louder than my pmb with quiet insert, but it is still legal. The pmb requires no jet changes and personally I felt no power loss. Most of that feeling comes from less noise, but without a dyno it is very minute. It just depends on what you want and how much $ you have to spend. They are both great products.

Thank you. how long did it take to install?

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Thank you. how long did it take to install?

they both take about a half hour to install. The Q will take a bit more including jetting though.

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